iOS input focused inside fixed parent stops position update of fixed elements

Question

The following happens on Mobile Safari iOS 6.1.2

Steps to reproduce

Create a position: fixed element with an <

Answer 1

Position:Fixed has a lot of well known-bugs, you can check them here: Remysharp article. Probably you can still fix some of them using the answers from this question: CSS “position: fixed;” into iPad/iPhone?

Good luck!